(Topic ID: 224305)

Pinbot - Help Please :)


By jag8511

2 years ago



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  • 234 posts
  • 14 Pinsiders participating
  • Latest reply 1 year ago by jag8511
  • Topic is favorited by 14 Pinsiders

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#11 2 years ago

I would suggest that you replace the jet bumper coil with light bulbs while you try to find the main problem. 2 flashers bulbs connected in series should do the trick. If the lights are on when the jet bumper isn't supposed to be on you still have a problem, but you will not burn the TIP122 instantly. Still keep the game on for as short as possible if the bulbs are on.

#12 2 years ago

U50 is also responsible for turning Q78 and Q79 on. Check input pins 5 and 6, they both have to be low (less then 0.7 Volt) for the output pin 4 to be on.

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